ocr: PLATFORM SCALES - tv. CONNECTING BAR SECOND LEVER. : - - - : THIRD CALIBRATED LEVER BAR 5 WEIGR 3 7 L FIRST LEVER WEIGHT. SCALES are useful Prarveighin weighing heavy objects accurately. Three levers are connected SO that the load on one lever becomes the effort on the next lever. The effect ofthis DE is that you can balance a heavy object by sliding SEE asmall weight along ALSO the calibrated bar.
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